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September 2, 2025 Service bulletin

This bulletin provides information on making sure the dedicated ground from the battery negative to the...

Oshkosh technical service bulletin FDM-IB-011 for 2019-2025 Oshkosh S-Series.

Bulletin number
FDM-IB-011
Component
Engine
Summary
This bulletin provides information on making sure the dedicated ground from the battery negative to the engine block ground stud remains installed when a powertrain harness is replaced. Service personnel have found instances of this ground cable not being reconnected when a powertrain harness has been replaced, this dedicated ground MUST be installed as it was when the vehicle left the factory. Failure to keep the dedicated ground installed could lead to engine failure over time.

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